Initial commit

BankSystem/src/main/java/BankSystemUI.java

@@ -0,0 +1,142 @@
+import javax.swing.*;
+
+public class BankSystemUI extends JDialog {
+    private JTextField accountIdField;
+    private JButton QueryButton, CreateButton, DepositButton, WithdrawButton, TransferButton, DeleteButton;
+    private JTextField NameField, BalanceField;
+    private JPanel contentPane;
+
+    private BankSystemCore core = new BankSystemCore();
+
+    public BankSystemUI() {
+        setResizable(false);
+        setContentPane(contentPane);
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+        setTitle("简易银行系统");
+
+        QueryButton.addActionListener(e -> queryAccountAction());
+
+        CreateButton.addActionListener(e -> {
+            String name = JOptionPane.showInputDialog(this, "请输入账户名:", "创建账户", JOptionPane.PLAIN_MESSAGE);
+            if (name == null || name.trim().isEmpty()) {
+                if (name != null) {
+                    JOptionPane.showMessageDialog(this, "账户名不能为空。", "创建账户错误", JOptionPane.ERROR_MESSAGE);
+                }
+                return;
+            }
+            try {
+                Account account = core.CreateAccount(name.trim());
+                if (account != null) {
+                    JOptionPane.showMessageDialog(this, "账户创建成功！\n账户ID: " + account.getAccountId(), "创建账户成功", JOptionPane.INFORMATION_MESSAGE);
+                    accountIdField.setText(account.getAccountId());
+                    queryAccountAction();
+                } else {
+                    JOptionPane.showMessageDialog(this, "创建账户失败。", "创建账户错误", JOptionPane.ERROR_MESSAGE);
+                }
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(this, "创建账户时发生错误: " + ex.getMessage(), "创建账户错误", JOptionPane.ERROR_MESSAGE);
+            }
+        });
+
+        DepositButton.addActionListener(e -> {
+            String id = accountIdField.getText().trim();
+            if (id.isEmpty()) {
+                JOptionPane.showMessageDialog(this, "请输入账户ID。", "存款错误", JOptionPane.ERROR_MESSAGE);
+                return;
+            }
+            String amt = JOptionPane.showInputDialog(this, "请输入存款金额:", "存款", JOptionPane.PLAIN_MESSAGE);
+            if (amt == null || amt.trim().isEmpty()) return;
+            try {
+                core.Deposit(id, Double.parseDouble(amt.trim()));
+                JOptionPane.showMessageDialog(this, "存款成功。", "存款成功", JOptionPane.INFORMATION_MESSAGE);
+                queryAccountAction();
+            } catch (NumberFormatException ex) {
+                JOptionPane.showMessageDialog(this, "无效的金额格式。", "存款错误", JOptionPane.ERROR_MESSAGE);
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(this, ex.getMessage(), "存款错误", JOptionPane.ERROR_MESSAGE);
+            }
+        });
+
+        WithdrawButton.addActionListener(e -> {
+            String id = accountIdField.getText().trim();
+            if (id.isEmpty()) {
+                JOptionPane.showMessageDialog(this, "请输入账户ID。", "取款错误", JOptionPane.ERROR_MESSAGE);
+                return;
+            }
+            String amt = JOptionPane.showInputDialog(this, "请输入取款金额:", "取款", JOptionPane.PLAIN_MESSAGE);
+            if (amt == null || amt.trim().isEmpty()) return;
+            try {
+                core.Withdraw(id, Double.parseDouble(amt.trim()));
+                JOptionPane.showMessageDialog(this, "取款成功。", "取款成功", JOptionPane.INFORMATION_MESSAGE);
+                queryAccountAction();
+            } catch (NumberFormatException ex) {
+                JOptionPane.showMessageDialog(this, "无效的金额格式。", "取款错误", JOptionPane.ERROR_MESSAGE);
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(this, ex.getMessage(), "取款错误", JOptionPane.ERROR_MESSAGE);
+            }
+        });
+
+        TransferButton.addActionListener(e -> {
+            String from = accountIdField.getText().trim();
+            if (from.isEmpty()) {
+                JOptionPane.showMessageDialog(this, "请输入源账户ID。", "转账错误", JOptionPane.ERROR_MESSAGE);
+                return;
+            }
+            String to = JOptionPane.showInputDialog(this, "请输入目标账户ID:", "转账", JOptionPane.PLAIN_MESSAGE);
+            if (to == null || to.trim().isEmpty()) return;
+            String amt = JOptionPane.showInputDialog(this, "请输入转账金额:", "转账", JOptionPane.PLAIN_MESSAGE);
+            if (amt == null || amt.trim().isEmpty()) return;
+            try {
+                core.Transfer(from, to.trim(), Double.parseDouble(amt.trim()));
+                JOptionPane.showMessageDialog(this, "转账成功。", "转账成功", JOptionPane.INFORMATION_MESSAGE);
+                queryAccountAction();
+            } catch (NumberFormatException ex) {
+                JOptionPane.showMessageDialog(this, "无效的金额格式。", "转账错误", JOptionPane.ERROR_MESSAGE);
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(this, ex.getMessage(), "转账错误", JOptionPane.ERROR_MESSAGE);
+            }
+        });
+
+        DeleteButton.addActionListener(e -> {
+            String id = accountIdField.getText().trim();
+            if (id.isEmpty()) {
+                JOptionPane.showMessageDialog(this, "请输入要删除的账户ID。", "删除错误", JOptionPane.ERROR_MESSAGE);
+                return;
+            }
+            int res = JOptionPane.showConfirmDialog(this, "确认删除账户 " + id + "？", "删除确认", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE);
+            if (res == JOptionPane.YES_OPTION) {
+                try {
+                    core.DeleteAccount(id);
+                    JOptionPane.showMessageDialog(this, "删除成功。", "删除成功", JOptionPane.INFORMATION_MESSAGE);
+                    accountIdField.setText("");
+                    clearFields();
+                } catch (Exception ex) {
+                    JOptionPane.showMessageDialog(this, ex.getMessage(), "删除错误", JOptionPane.ERROR_MESSAGE);
+                }
+            }
+        });
+    }
+
+    private void queryAccountAction() {
+        String id = accountIdField.getText().trim();
+        if (id.isEmpty()) {
+            JOptionPane.showMessageDialog(this, "账户ID不能为空。", "查询错误", JOptionPane.ERROR_MESSAGE);
+            clearFields();
+            return;
+        }
+        try {
+            Account acc = core.QueryAccount(id);
+            NameField.setText(acc.getName());
+            BalanceField.setText(String.format("%.2f", acc.getBalance()));
+        } catch (Exception ex) {
+            JOptionPane.showMessageDialog(this, ex.getMessage(), "查询错误", JOptionPane.ERROR_MESSAGE);
+            clearFields();
+        }
+    }
+
+    private void clearFields() {
+        NameField.setText("");
+        BalanceField.setText("");
+    }
+
+}